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J & K CET Engineering J and K - CET Engineering Solved Paper-2007

  • question_answer
    The direction cosines of two rays \[\overrightarrow{AB}\] and \[\overrightarrow{AC}\] are \[\left( \frac{1}{2},\frac{1}{2},-1 \right)\] and \[\left( \frac{2}{7},\frac{-3}{7},\frac{6}{7} \right).\] The direction ratios of one of the bisectors of angle \[\left( \overrightarrow{AB},\overrightarrow{AC} \right)\]are

    A)  \[(13,\,-5,\,\,4)\]   

    B)  \[(13,\,5,\,\,-5)\]

    C)  \[(13,\,5,4)\]     

    D)  None of these

    Correct Answer: D

    Solution :

    In this question we are given direction ratios of one ray and direction cosines of other ray and called as direction cosines of both which is wrong.


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